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Performance graph showing the effect of increased valve lift on a Japan Engine.


Identifier  ExFiles\Box 181\M13\M13.2\  img076
Date  11th August 1931 guessed
  
CURVE III
EFFECT OF INCREASED VALVE LIFT
ON JAPAN(Experimental Engine) ENGINE
5.35 C/R TWIN ZENITH 26 M {Mr Moon / Mr Moore} /M. CHOKE.
P.II SHORT TYPE SILENCER 2" DOWNTAKE
112° CAMSHAFT ALL TESTS
C.O CLOSED
B.H.P.
B.M.E.P.
R.P.M.
TIMING .020" TAPPET CL'CE
Ex
IN
57
43
43
------- INCREASED VALVE LIFT .395
_______ STD VALVE LIFT .344
INCREASE IN PEAK POWER DUE TO HIGHER LIFT 6 1/4 %
  
  
From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).


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